Planetary Health Check 2026: Seven Boundaries Breached

1. Question 1Answer B

   The Planetary Health Check 2026 found how many planetary boundaries transgressed, all at record levels?

   • AFive
   • BCorrect answer: Seven
   • CSix
   • DEight

   Core Trigger: The Planetary Health Check 2026 was released on 21 September 2026, finding seven of nine planetary boundaries transgressed, all at record levels.From Book 1 RATNA, topic 208, point 1

2. Question 2Answer A

   Which boundary, breached in 2025, is the newest to be crossed?

   • ACorrect answer: Ocean acidification
   • BFreshwater change
   • CNovel entities
   • DLand-system change

   Newest Breach: Ocean acidification, breached in 2025, is the newest boundary crossed; the report notes worsening trends across the Earth system.From Book 1 RATNA, topic 208, point 2

3. Question 3Answer B

   Which lab at PIK produced the Planetary Health Check 2026?

   • AClimate Resilience Lab
   • BCorrect answer: Planetary Boundaries Science Lab
   • CEarth Commission Lab
   • DGlobal Tipping Points Lab

   Issuing Body: The Planetary Boundaries Science Lab at Germany's Potsdam Institute for Climate Impact Research (PIK) produced the report.From Book 1 RATNA, topic 208, point 3

4. Question 4Answer A

   How many Earth-system limits make up the planetary boundaries framework?

   • ACorrect answer: Nine
   • BSeven
   • CTen
   • DTwelve

   Key Term: Planetary boundaries are nine Earth-system limits within which humanity can develop safely; the framework was proposed in 2009.From Book 1 RATNA, topic 208, point 4

5. Question 5Answer C

   1. Stratospheric ozone depletion remains within its limit. 2. Atmospheric aerosol loading remains within its limit. Which of the following is/are correct?

   • AOnly 1
   • BOnly 2
   • CCorrect answer: Both 1 and 2
   • DNeither 1 nor 2

   Data: Only stratospheric ozone depletion and atmospheric aerosol loading remain within their limits.From Book 1 RATNA, topic 208, point 5

6. Question 6Answer D

   The report links planetary pressure to India's pledge of net-zero emissions by which year?

   • A2050
   • B2060
   • C2047
   • DCorrect answer: 2070

   India Link: Pressure on climate, freshwater and oceans bears directly on India's long coastline, monsoon-dependent agriculture and its pledge of net-zero emissions by 2070.From Book 1 RATNA, topic 208, point 7

7. Question 7Answer C

   In which German city is PIK headquartered?

   • ABerlin
   • BHamburg
   • CCorrect answer: Potsdam
   • DBonn

   Headquarters: PIK is headquartered in Potsdam, Germany, near Berlin.From Book 1 RATNA, topic 208, point 8

8. Question 8Answer A

   PIK was founded in which year?

   • ACorrect answer: 1992
   • B1972
   • C1987
   • D2002

   Founded: PIK was founded in 1992 as a research institute on global change and climate impacts.From Book 1 RATNA, topic 208, point 9

9. Question 9Answer B

   Which 2009 Nature paper set out the planetary boundaries framework?

   • ALimits to Growth
   • BCorrect answer: A safe operating space for humanity
   • CSilent Spring
   • DThe Tragedy of the Commons

   Landmark: The 2009 Nature paper 'A safe operating space for humanity' by Johan Rockstroem and colleagues set out the planetary boundaries framework.From Book 1 RATNA, topic 208, point 10

10. Question 10Answer D

    1. Article 48A is a Fundamental Duty of citizens. 2. Article 51A(g) is a Directive Principle for the State. Which of the following is/are correct?

    • AOnly 1
    • BOnly 2
    • CBoth 1 and 2
    • DCorrect answer: Neither 1 nor 2

    Articles: Articles 48A and 51A(g) direct State and citizens to protect the environment; the Environment (Protection) Act, 1986 is the umbrella law.From Book 1 RATNA, topic 208, point 11

Open these answers in the app (sign-in needed)